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Assessing the pomfret stock for setting catch limits in the northern Bay of Bengal,Bangladesh

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Aquaculture and Fisheries 2024年第2期9卷 324-335页

作者： Mohammed Shahidul Alam Qun Liu Md Mostafa Monwar Md Enamul Hoque suman Barua Md Leion Hassan Abdullah Munzer College of Fisheries Ocean University of ChinaQingdao266003China Department of Fisheries University of ChittagongChattogram4331Bangladesh Institute of Marine Sciences University of ChittagongChattogram4331Bangladesh Department of Oceanography University of ChittagongChattogram4331Bangladesh Department of Fisheries Ministry of Fisheries and LivestockDhaka1215Bangladesh

Pampus argenteus and Pampus chinensis form the high-value demersal Pomfret fishery of ***,due to a monotonic decline in catches over the last five years,it is essential to explore the current stock status concerning the removal rate to ensure the sustainability of this ***,given the reliability and minimal data requirements,this study employed an extended Bayesian State-Space Surplus Production Model,JABBA(Just Another Bayesian Biomass Assessment),to assess the stock *** results revealed that the stock biomass of the Pomfret fishery in the final year of the time series is significantly lower than BMSY,the biomass required to produce ***,this study recommends a yearly catch limit(TAC)of 10,000 metric tons to prevent further depletion of the stock ***,to avoid growth overfishing by allowing all immature fishes to reproduce at least once before being caught,this study also calculated the optimum length(Lopt)for catch for both species at which biologically maximum yield and revenue can be *** estimated Lopt is 25 cm for *** and 30 cm for ***,and not to capture fishes with lengths lower than these limits,this study further calculated the minimum mesh size limits for gill and set bag nets is 7.5 *** the mesh size regulation was estimated using length-based reference points derived from an empirical equation,this regulation can be used as an associate reference point when TAC is applied to assure the sustainability of this fishery.

关键词： Pomfret fishery Stock assessment JABBA TAC Lower length limits for catches Mesh size regulation

Understanding factors affecting non-participants' interest in community-supported agriculture

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Regional Sustainability 2024年第3期 71-82页

作者： Maula Fadhilata RAHMATIKA Agus suman Wildan SYAFITRI Sri MULJANINGSIH Faculty of Economics and Business Brawijaya University

Community-supported agriculture(CSA) has emerged as a viable solution for addressing the agricultural challenges faced by countries like Indonesia. This study uses the wellestablished unified theory of acceptance and use of technology(UTAUT2) model to examine the interest in CSA of potential customers in Indonesia. A standardized questionnaire was distributed to 1200 respondents, and the data were analyzed using structural equation model-partial least square(SEM-PLS) in Smart PLS 4.0 software. The results capture potential CSA consumer interest and will help to improve CSA development strategies in Indonesia. The model explains 44.4% of customers' intentions, and identifies performance expectancy as the decisive factor in customers' willingness to participate in CSA. Performance expectancy(0.292), hedonic motivation(0.262), social influence(0.259), and facilitating conditions(0.086) positively influence customers' interest in participating in a CSA program. The adoption of CSA programs by both farmers and customers could be increased by implementing regulations that provide tax incentives and subsidies, offering training on sustainable farming practices, facilitating the establishment of distribution channels, and establishing guidelines for fair price and quality standards. This study shows the high potential for the implementation of CSA in Indonesia. It could also be used as a foundation for the development of new policies regarding sustainable agriculture markets in Indonesia.

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Understanding factors affecting non-participants’interest in community-supported agriculture

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Regional Sustainability 2024年第3期5卷 69-80页

作者： Maula Fadhilata RAHMATIKA Agus suman Wildan SYAFITRI Sri MULJANINGSIH Faculty of Economics and Business Brawijaya UniversityMalang65145Indonesia

Community-supported agriculture(CSA)has emerged as a viable solution for addressing the agricultural challenges faced by countries like *** study uses the wellestablished unified theory of acceptance and use of technology(UTAUT2)model to examine the interest in CSA of potential customers in Indonesia.A standardized questionnaire was distributed to 1200 respondents,and the data were analyzed using structural equation model-partial least square(SEM-PLS)in SmartPLS 4.0 *** results capture potential CSA consumer interest and will help to improve CSA development strategies in *** model explains 44.4%of customers’intentions,and identifies performance expectancy as the decisive factor in customers’willingness to participate in *** expectancy(0.292),hedonic motivation(0.262),social influence(0.259),and facilitating conditions(0.086)positively influence customers’interest in participating in a CSA *** adoption of CSA programs by both farmers and customers could be increased by implementing regulations that provide tax incentives and subsidies,offering training on sustainable farming practices,facilitating the establishment of distribution channels,and establishing guidelines for fair price and quality *** study shows the high potential for the implementation of CSA in *** could also be used as a foundation for the development of new policies regarding sustainable agriculture markets in Indonesia.

关键词： Community-supported agriculture(CSA) Sustainable agriculture Behavioral intention Performance expectancy Unified theory of acceptance and use of technology model Indonesia

在关系化与类别化之间:鄂西武陵山区返乡农民工的创业实践及社会网络重构

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原生态民族文化学刊 2024年第1期16卷 97-106,155页

作者：解素蔓中央民族大学民族学与社会学学院北京100081

本文通过对鄂西武陵山区农村的田野调查发现,熟人社会网络主要依靠传统儒家伦理来维持,呈现出关系化的社会网络状态,这种社会网络呈现单一和发展规模有限等特点。随着人口城乡流动剧增,特别是大批农民工进城以及返乡以后,原本相对单一... 详细信息

本文通过对鄂西武陵山区农村的田野调查发现,熟人社会网络主要依靠传统儒家伦理来维持,呈现出关系化的社会网络状态,这种社会网络呈现单一和发展规模有限等特点。随着人口城乡流动剧增,特别是大批农民工进城以及返乡以后,原本相对单一的重构方式趋于多元化,并呈现着关系化和类别化等多重社会网络并置的状况。多重社会网络并置现象既是城乡流动的体现,也是不同人群基于生存选择而将乡土性和城市性编入日常生活实践的结果。其生成对于重新理解国家、社会和个人的关系,以及进一步理解中国社会转型过程中的差序格局及公私边界等问题有着重要启示意义。

关键词：返乡农民工社会网络关系化类别化并置

High Strain-Rate and Shock Response of Carbon SupercompositeTM

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Open Journal of Composite Materials 2024年第3期14卷 132-145页

作者： suman Babu Ukyam Raju P. Mantena Damian L. Stoddard Arunachalam M. Rajendran Department of Mechanical Engineering University of Mississippi Mississippi USA

This study focuses on assessing the dynamic behaviors of carbon SupercompositeTM laminates when subjected to high strain-rates and air blast loads, using a shock tube for testing. The investigation aims to understand the response of these advanced materials under extreme conditions, which is crucial for applications in aerospace, military, and other high-performance industries. SupercompositeTM (CZE) prepreg, made up of a 3K plain weave carbon fabric with milled carbon fibers as interlaminar reinforcements impregnated with epoxy, is used to create SupercompositeTM (CZE) laminates. A woven carbon composite (CBE) laminate was also created using 3K plain weave Carbon/Epoxy (CBE) prepreg. Both types of laminates were designed and fabricated using the autoclave process. The dynamic behaviors of CZE and CBE laminate under transverse compression loads were evaluated using a modified Split Hopkinson Pressure Bar (SHPB). The study found that the 3D reinforcement with milled carbon fibers significantly affected the dynamic behavior of the CZE laminate. Stereo imaging videos, captured using two SHIMADZU high-speed video cameras in shock tube experiments, recorded the time history of back surface deflection. The plate specimens exhibited low deflections without any visible damage. The experimentally observed center point deflections of the CZE plates decayed sooner than those of the CBE laminates, indicating an improvement in damping due to the presence of 3D reinforced milled carbon fibers. This research shows that optimized utilization of milled carbon fibers as 3D reinforcement can withstand high stress in the thickness direction and higher energy absorption when subjected to impact and high strain-rate loading.

关键词： SupercompositeTM GOM Software 3D Reinforcement Milled Carbon Fibers Split Hopkinson Pressure Bar (SHPB) Air-Blast Loads

布南色林联合经颅磁刺激对女性精神分裂症患者的临床研究

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四川医学 2024年第2期45卷 151-154页

作者：程素满重庆市精神卫生中心重庆401147

目的探讨布南色林联合经颅磁刺激(TMS)对女性精神分裂症患者的临床疗效。方法选取2022年1月至2022年10月我中心收治的60例女性精神分裂症患者,分为对照组(单独服用布南色林)和观察组(布南色林联合TMS),每组各30例,治疗8周。观察患者治... 详细信息

目的探讨布南色林联合经颅磁刺激(TMS)对女性精神分裂症患者的临床疗效。方法选取2022年1月至2022年10月我中心收治的60例女性精神分裂症患者,分为对照组(单独服用布南色林)和观察组(布南色林联合TMS),每组各30例,治疗8周。观察患者治疗前后血清中催乳素(PRL)、促甲状腺激素(TSH)、游离三碘甲状腺素(FT3)、游离甲状腺素(FT4)水平变化。采用阳性与阴性症状量表(PANSS)评价临床症状,简易精神状态检查量表(MMSE)和蒙特利尔认知评估量表(MoCA)评价认知功能的变化。结果与对照组比较,观察组在治疗后血清中性激素(PRL、TSH)和甲状腺激素(TSH、FT3、FT4)水平变化显著,PANSS总分、阴性症状评分和一般精神病理评分均降低,MMSE评分和MoCA评分增高,两组比较显示观察组优于对照组,差异有统计学意义(P<0.05)。结论TMS调控血清中激素水平,对精神分裂症患者的阴性症状和认知功能均具有改善作用,布南色林联合TMS治疗精神分裂症效果更好,值得临床推广和应用。

关键词：精神分裂症布南色林经颅磁刺激激素认知功能

Impact of selection of DC base values and DC link control strategies on sequential AC-DC power-flow convergence

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Frontiers in Energy 2015年第4期9卷 399-412页

作者： Shagufla KHAN suman BHOWMICK Department of Electrical Engineering Delhi Technological University Delhi 110042 India

This paper demonstrates the convergence of the integrated AC-DC power-flow algorithm as affected by the selection of different base values for the DC quantities and adoption of different control strategies for the DC link. For power-flow modeling of integrated AC-DC systems, the base values of the various DC quantities can be defined in several ways, giving rise to different sets of per-unit system equations. It is observed that different per-unit system models affect the convergence of the power-flow algorithm differently. In a similar manner, the control strategy adopted for the DC link also affects the power- flow convergence. The sequential method is used to solve the DC variables in the Newton Raphson （NR） power flow model, where AC and DC systems are solved separately and are coupled by injecting an equivalent amount of real and reactive power at the terminal AC buses. Now, for a majority of the possible control strategies, the equivalent real and reactive power injections at the concerned buses can be computed a-priori and are independent of the NR iterative loop. However, for a few of the control strategies, the equivalent reactive power injections cannot be computed a-priori and need to be computed in every NR iteration. This affects the performance of the iterative process. Two different per-unit system models and six typical control strategies are taken into consideration. This is validated by numerous case studies conducted on the IEEE 118-bus and 300-bus test systems.

关键词： AC-DC power-flow Newton-Raphsonmethod high voltage direct current (HVDC) controlstrategy

Hybrid Cuckoo Search Algorithm for Scheduling in Cloud Computing

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Computers, Materials & Continua 2022年第4期71卷 1641-1660页

作者： Manoj Kumar suman CSE Department DCR University of Science and TechnologyMurthal131039SonepatIndia

Cloud computing has gained widespread popularity over the last *** problem in cloud computing is prejudiced due to enormous demands of cloud ***-heuristic techniques in cloud computing have exhibited high performance in comparison to traditional scheduling *** paper presents a novel hybrid Nesterov Accelerated Gradient-based Cuckoo Search Algorithm(NAGCSA)to address the scheduling issue in cloud *** Accelerated Gradient can address trapping at local minima in CSA by updating the position using future *** local search in the proposed algorithm is performed by using Nesterov Accelerated Gradient,while the global search is performed by using levy *** amalgamation of NAG and CSA helps in cost reduction and time-saving for *** simulation has been carried out on the CloudSim tool on three different real datasets;NASA,HPC2N,and *** results of the proposed hybrid algorithm have been compared with state-of-art scheduling algorithms(GA,PSO,and CSA),and statistical significance is carried on mean,standard deviation,and best for each *** has been established that the proposed algorithm minimizes the execution cost and makespan,hence enhancing the quality of service for users.

关键词： Cloud computing scheduling quality of service cuckoo search cost makespan

Fuzzy Firefly Based Intelligent Algorithm for Load Balancing inMobile Cloud Computing

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Computers, Materials & Continua 2023年第1期74卷 1783-1799页

作者： Poonam suman Sangwan CSE Department Deenbandhu Chhotu Ram University of Science and TechnologyMurthal131039SonepatIndia

This paper presents a novel fuzzy firefly-based intelligent algorithm for load balancing in mobile cloud computing while reducing *** proposed technique implicitly acts intelligently by using inherent traits of fuzzy and *** automatically adjusts its behavior or converges depending on the information gathered during the search process and objective *** works for 3-tier architecture,including cloudlet and public *** cloudlets have limited resources,fuzzy logic is used for cloudlet selection using capacity and waiting time as *** provides human-like decisions without using any mathematical *** is a powerful meta-heuristic optimization technique to balance diversification and solution *** balances the load on cloud and cloudlet while minimizing makespan and execution ***,it may trap in local optimum;levy flight can handle *** of fuzzy fireflywith levy flight is a novel technique that provides reduced makespan,execution time,and Degree of imbalance while balancing the *** has been carried out on the Cloud Analyst platform with National Aeronautics and Space Administration(NASA)and Clarknet *** show that the proposed algorithm outperforms Ant Colony Optimization Queue Decision Maker(ACOQDM),Distributed Scheduling Optimization Algorithm(DSOA),andUtility-based Firefly Algorithm(UFA)when compared in terms of makespan,Degree of imbalance,and Figure of Merit.

关键词： Cloud computing cloudlet mobile cloud computing fuzzy firefly load balancing makespan degree of imbalance